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Record W4248121870 · doi:10.22215/etd/2014-10250

Thermal Environment for Polar Communications and Weather System in the Telesat-Tundra Orbit

2014· dissertation· en· W4248121870 on OpenAlex

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

Venuenot available
Typedissertation
Languageen
FieldEngineering
TopicSpacecraft Design and Technology
Canadian institutionsCarleton University
Fundersnot available
KeywordsGeostationary orbitTundraSatelliteSpacecraftEnvironmental scienceAerospace engineeringOrbit (dynamics)Remote sensingPolar orbitThermalMeteorologyArcticComputer scienceGeographyEngineeringGeology

Abstract

fetched live from OpenAlex

This thesis examines the thermal environment and control system for the Polar Communications and Weather (PCW) satellite system as proposed by Telesat. The Telesat-PCW will use a unique orbit, based on the Tundra orbit to provide continuous meteorological and communications coverage to the Arctic region. The Telesat Tundra Orbit (TTO) was selected as it can meet the mission requirements using systems designed for Geostationary Orbits (GEO), a mature and robust field. However, the unique combination of communications and meteorological payloads, coupled with a previously unused orbit, presents an unexamined thermal design scenario. Using an existing geostationary satellite design for PCW would significantly reduce costs. This thesis describes the spacecraft thermal environment of the TTO, compares it to the thermal environment of the geostationary orbit, and numerically analyzes the suitability of a typical geostationary satellite thermal design system for PCW by using a Thermal Mathematical Model (TMM). The analysis shows that a thermal control system for a typical GEO communications satellite can sufficiently regulate PCW spacecraft temperatures in the TTO.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Not applicable · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.864
Threshold uncertainty score0.432

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.009
GPT teacher head0.207
Teacher spread0.197 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Quick stats

Citations0
Published2014
Admission routes1
Has abstractyes

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